Signals From Bus-Coupler - ABB RELION RET670 Applications Manual

1MRK 504 163-UUS A
15.3.4.2
Transformer protection RET670 2.2 ANSI
Application manual
189
289
189G
152
289G
389G
252
489G
389 489
ANSI04000515 V1 EN-US
Figure 333: Switchyard layout AB_TRAFO (3)
The signals from other bays connected to the module AB_TRAFO are described
below.

Signals from bus-coupler

If the busbar is divided by bus-section disconnectors into bus-sections, the busbar-
busbar connection could exist via the bus-section disconnector and bus-coupler within
the other bus-section.
WA1 (A)
WA2 (B)
AB_TRAFO
252 and 489G are not
used in this interlocking
en04000515_ansi.vsd
Section 15
Control
M13566-4 v4
M13566-6 v4
731